借助SNS提高数字图书馆的服务质量

数字图书馆可利用SNS实现远程文献检索和阅览、读者评价、读者之间的交流、读者和图书馆员间的交流等,推动数字图书馆间的数字资源共享。阐述了国内外图书馆应用SNS的现状,分析了数字图书馆在利用SNS方面的优势,提出了借助SNS提高数字图书馆服务质量的措施,讨论了建立我国图书馆界SNS的问题。     

论中国SNS粉丝主页的营销成果及营销思路——以人人网粉丝主页为例

SNS粉丝主页的营销成果体现在市场营销的方方面面：口碑或品牌传播效果,消费者品牌关系的建立,品牌认知及品牌形象的提高.SNS营销战略定位要从单纯的品牌植入扩展到粉丝主页运营方面.中国当下品牌SNS的营销应当采取内容更新、粉丝主页意识培养、管理者的专业化和年轻化、忠诚用户升华等措施.     

基于SNS的高校图书馆信息服务模式研究

随着Web2.0技术的发展,SNS已经日趋广泛的应用于图书馆信息服务当中。本文从SNS基本概念入手,论述了SNS在图书馆信息服务中的必然性,探讨了高校图书馆引入SNS的策略。     

SNS网站质量评价基本指标集分析

SNS即社会化网络服务,本文在借鉴Pitt,Watson＆Kavan修改过的IS成功模型基础上,构建了SNS网站质量评价的初步概念模型,然后通过逐级展开测评指标分析了SNS网站质量评价指标集,为SNS网站质量评价提供了基本指标集。     

基于一个新视角的企业竞争力评价模型

文章从一个新视角对企业竞争力进行了探讨,着重于对企业营销竞争力的分析,借鉴企业竞争力评 价方法,以顾客价值理论和整合营销理论为基础,选择营销业绩竞争力、营销信息竞争力、营销战略竞争力、 营销策略竞争力和营销执行竞争力５个评价指标,构建企业营销竞争力评价模型,并对其评价方法进行研究。     

基于孝文化的银色营销策略

随着老年化社会的到来,银色消费市场正蓬勃兴起.但我国银色消费市场的巨大潜力由于受到各种因素约束尚未有效开发出来.以孝文化为基础开展文化营销,是指在银色产品和服务中注入孝文化,使其具有独特的文化个性和审美价值,从而实现营销目标的一种文化营销策略.基于孝文化的银色营销,应以银色文化营销、银色情感营销、银色品牌营销等方面作为切入点.     

SNS火爆高校校园的传播学解读

指出学术界及业界多从营销或是高校思想教育角度,而较少从传播学视域对校园SNS的流行给予解读。以传播学的基础理论为视角,从自我表露的交互式平台的构建、受众群体的选择以及网络空间真实映像的写照三个层面对SNS火爆校园的现状及原因进行学理性透视与思考,探讨校园SNS何以在高校如此备受青睐。     

IM与SNS在高校图书馆虚拟参考咨询服务中的应用研究

阐述了高校图书馆虚拟参考咨询服务所用工具IM与SNS的特点,对高校图书馆虚拟参考咨询服务所用的2种IM工具和5种SNS工具进行了比较,提出了高校图书馆移动服务的解决策略。     

供电企业电力营销策略分析

供电企业在我国一直处于垄断地位。＂十一五＂将电力体制改革提上日程,电力市场化势在必行,供电企业传统的电力营销策略现已无法满足我国供电企业的长足发展。电力营销是我国供电企业的工作重点与核心,我国的电力体制改革也非常注重供电企业的电力营销策略,因此,转变供电企业的电力营销观念和策略是现阶段必须重点解决的问题。该文介绍了供电企业电力营销存在的问题,然后简单分析了我国供电企业的电力营销策略。     

论电子商务的品牌策略

本文根据我国电子商务发展的现状,提出了电子商务已进入了品牌发展阶段,电子商务网站应该通过树立网站的品牌形象,提高网站的知名度和指名度,引导更多的消费者开展网上商务活动。并结合电子商务品牌的特点,阐述了塑造电子商务品牌的网站命名策略、关联营销策略、许可营销策略、消费者营销策略和品牌整合策略等策略。     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.